operating manual platform/floor scales · 3.2 improper use do not use balance for dynamic addon...

KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen E-Mail: [email protected]

Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com

Operating manual Platform/floor scales

KERN EOB / EOE / EOS Type EOB_B Type EOE_B Type EOS_B Version 4.1 2017-04 GB

EOB / EOE / EOS-BA-e-1741

2 EOB / EOE / EOS -BA-e-1741

GB

KERN EOB / EOE / EOS Version 4.1 2017-04 Operating instructions Platform/floor scales

Contents 1 Technical data ................................................................................................ 4

2 Appliance overview ..................................................................................... 10

2.1 Overview of display ...................................................................................................12

2.2 Keyboard overview ...................................................................................................13

3 Basic Information (General) ........................................................................ 14

3.1 Proper use ................................................................................................................14

3.2 Improper Use ............................................................................................................14

3.3 Warranty ...................................................................................................................14

3.4 Monitoring of Test Resources ...................................................................................15

4 Basic Safety Precautions ............................................................................ 15

4.1 Pay attention to the instructions in the Operation Manual .........................................15

4.2 Personnel training .....................................................................................................15

5 Transport and storage ................................................................................. 15

5.1 Testing upon acceptance ..........................................................................................15

5.2 Packaging / return transport ......................................................................................15

6 Unpacking, Setup and Commissioning ..................................................... 16

6.1 Installation Site, Location of Use ...............................................................................16

6.2 Unpacking and placing ..............................................................................................16 6.2.1 Scope of delivery / serial accessories ...................................................................................... 17

6.3 Mains connection ......................................................................................................17

6.4 Battery operation ......................................................................................................17

6.5 Initial Commissioning ................................................................................................17

7 Adjustment ................................................................................................... 18

8 Operation ...................................................................................................... 20

8.1 Start-up .....................................................................................................................20

8.2 Switching Off ............................................................................................................20

8.3 Taring .......................................................................................................................21

8.4 Hold function (animal weighing function) ...................................................................22

8.5 Determination of the number of pieces .....................................................................23

EOB / EOE / EOS -BA-e-1741 3

9 Menu ............................................................................................................. 24

9.1 Navigation in the menu .............................................................................................24

9.2 Menu overview..........................................................................................................24

10 Servicing, maintenance, disposal .............................................................. 26

10.1 Cleaning ...................................................................................................................26

10.2 Servicing, maintenance .............................................................................................26

10.3 Disposal ....................................................................................................................26

11 Error messages, troubleshooting guide .................................................... 26

12 Declaration of conformity ........................................................................... 28


1 Technical data Models KERN EOB

KERN (Type) EOB 10K-3B

EOB 30K-2B

EOB 60K-2B

EOB 60K-2LB

Trademark EOB 15K5

EOB 35K10

EOB 60K20

EOB 60K20L

Readability (d) 5 g 10 g 20 g 20 g

Weighing range (max) 15 kg 35 kg 60 kg 60 kg

Reproducibility 5 g 10 g 20 g 20 g

Linearity ± 10 g ± 20 g ± 40 g ± 40 g

Recommended adjustment weight, not added (class)

10 kg (M2)

20 kg (M2)

40 kg (M2)

40 kg (M2)

Stabilization time (typical) 3 sec. Warm-up time 10 min Input Voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA

Battery 4 x 1.5 V AA (= 6 V) Battery operation period 60 h Auto-Off 3 min Weighing Units kg, lb, pcs Ambient temperature + 5℃ …+ 35°C Humidity of air max. 80 % (not condensing) Display unit (B x D x H) mm 235 x 114 x 51

Cable length display unit 180 cm 180 cm 180 cm 270 cm Weighing surface mm 300 x 300 550 x 550 Weight kg (net) 4.2 13.5



EOB 100K-2LB

EOB 100K-2XLB

Trademark EOB 150K50

EOB 150K-50L

EOB 150K50XL

Readability (d) 50 g 50 g 50 g

Weighing range (max) 150 kg 150 kg 150 kg

Reproducibility 50 g 50 g 50 g

Linearity ± 100 g ± 100 g ± 100 g


100 kg (M2)

100 kg (M2)

100 kg (M2)

Stabilization time (typical) 3 sec. Warm-up time 10 min Input Voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA

Battery 4 x 1.5 V AA (= 6 V) Battery operation period 60 h Auto-Off 3 min Weighing Units kg, lb, pcs Ambient temperature + 5°C …+ 35°C Humidity of air max. 80 % (not condensing) Display unit (B x D x H) mm 235 x 114 x 51

Cable length display unit 180 cm 270 cm 270 cm Weighing surface mm 300 x 300 550 x 550 950 x 500 Weight kg (net) 4.2 13.5 19.5



EOB 300K-1LB

EOB 300K-1XLB

Trademark EOB 300K100

EOB 300K100L

EOB 300K100XL

Readability (d) 100 g 100 g 100 g

Weighing range (max) 300 kg 300 kg 300 kg

Reproducibility 100 g 100 g 100 g

Linearity ± 200 g ± 200 g ± 200 g


300 kg (M2)

300 kg (M2)

300 kg (M2)

Stabilization time (typical) 3 sec. Warm-up time 10 min. Input Voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA

Battery (optional) 4 x 1.5 V AA (= 6 V) Battery operation period 220 h Auto-Off 3 min Weighing Units kg, lb, pcs Ambient temperature + 10°C …+ 35°C Humidity of air max. 80 % (not condensing) Display unit (B x D x H) mm 235 x 114 x 51

Cable length display unit 180 cm 270 cm 270 cm Weighing surface mm 300 x 300 550 x 550 945 x 505 Weight kg (net) 4.2 13.5 19.5


Models KERN EOE

KERN (Type) EOE 10K-3B

EOE 30K-2B

EOE 60K-2B

EOE 60K-2LB

EOE 100K-2B

Trademark EOE 10K-3

EOE 30K-2

EOE 60K-2

EOE 60K-2L

EOE 100K-2

Readability (d) 5 g 10 g 20 g 20 g 50 g

Weighing range (max) 15 kg 35 kg 60 kg 60 kg 150 kg

Reproducibility 5 g 10 g 20 g 20 g 50 g

Linearity ± 10 g ± 20 g ± 40 g ± 40 g ± 100 g


10 kg (M3)

20 kg (M2)

40 kg (M2)

40 kg (M2)

100 kg (M2)

Stabilization time (typical) 2.5 sec. Warm-up time 10 min. Input Voltage 220 V- 240 V, AC 50 Hz Power pack secondary voltage 9V, 100 mA


Cable length display unit 180 cm 270 cm 180 cm Weighing surface mm 300 x 300 550 x 550 315 x 305 Weight kg (net) 3.8 3.8 3.8 13 3.8


KERN (Type) EOE 100K-2LB

EOE 100K-2XLB

EOE 300K-1B

EOE 300K-1LB

EOE 300K-1XLB

Trademark EOE 150K50L

EOE 150K50XL

EOE 300K100

EOE 300K100L

EOE 300K100XL

Readability (d) 50 g 50 g 100 g 100 g 100 g

Weighing range (max) 150 kg 150 kg 300 kg 300 kg 300 kg

Reproducibility 50 g 50 g 100 g 100 g 100 g

Linearity ± 100 g ± 100 g ± 200 g ± 200 g ± 200 g


100 kg (M3)

100 kg (M2)

300 kg (M2)

300 kg (M2)

300 kg (M2)


Battery (optional) 4 x 1.5 V AA (= 6 V) Battery operation period 100 h Auto-Off 3 min Weighing Units kg, lb, pcs Ambient temperature + 5℃ …+ 35°C Humidity of air max. 80 % (not condensing) Display unit (B x D x H) mm 235 x 114 x 51

Cable length display unit 270 cm 180 cm 270 cm Weighing surface mm 505 x 505 950 x 500 300 x 300 550 x 550 950 x 500 Weight kg (net) 13,0 18.0 3.8 13.0 18.0


Models KERN EOS

KERN (Type) EOS 100K-2BXL

EOS 300K-1BXL

Trademark EOS 150K50XL

EOS 150K50XL

Readability (d) 50 g 100 g

Weighing range (max) 150 kg 300 kg

Reproducibility 50 g 100 g

Linearity ± 100 g ± 200 g


100 kg (M2)

300 kg (M2)



Cable length display unit 270 cm Weighing surface mm 900 x 550 900 x 550 Weight kg (net) 17.0 17.0


2 Appliance overview Models EOB Weighing pan, stainless steel

Models EOE Weighing pan varnished steel


Models EOS

• Weighing pan, stainless steel • Anti-slip rubber mat

Comfortable transport due to 2 rollers and 1 grab handle


2.1 Overview of display Example EOB:

Nr. Description

1 Balance zero display: Should the balance not display exactly zero despite empty scale pan, press the TARE button. The balance will be set to zero after a short standby time.

2 Stability display: If the display shows the stability display [0] the balance is in a stable status. If the status is instable the [0] display disappears.

3 Stored tare value, see chap. 8.3 „Taring“

4 Gross weight display: If the gross weight [Gross] appears in the display, the gross weight of the object and weighing container are displayed.

5 Hold/animal weighing function active, see chap. 8.4

6 Weighing unit [kg lb]


2.2 Keyboard overview

Button Function

Turn on/off balance

Hold/ animal weighing function

Tare balance

Switch-over weighing unit Back to weighing mode, or to menu


3 Basic Information (General)

3.1 Proper use The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic balance”, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing pan. As soon as a stable weighing value is reached the weighing value can be read.

3.2 Improper Use Do not use balance for dynamic add-on weighing procedures, if small amounts of goods to be weighed are removed or added. The “stability compensation“ installed in the balance may result in displaying an incorrect measuring value! (Example: Slowly draining fluids from a container on the balance.) Do not leave permanent load on the weighing pan. This may damage the measuring system. Impacts and overloading exceeding the stated maximum load (max) of the balance, minus a possibly existing tare load, must be strictly avoided. Balance may be damage by this. Never operate balance in explosive environment. The serial version is not explosion protected. The structure of the balance may not be modified. This may lead to incorrect weighing results, safety-related faults and destruction of the balance. The balance may only be used according to the described conditions. Other areas of use must be released by KERN in writing.

3.3 Warranty Warranty claims shall be voided in case

• Our conditions in the operation manual are ignored

• The appliance is used outside the described uses

• The appliance is modified or opened

• Mechanical damage or damage by media, liquids, natural wear and tear

• The appliance is improperly set up or incorrectly electrically connected

• The measuring system is overloaded


3.4 Monitoring of Test Resources In the framework of quality assurance the measuring-related properties of the balance and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN’s home page (www.kern-sohn.com) with regard to the monitoring of balance test substances and the test weights required for this. In KERN's accredited DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost.

4 Basic Safety Precautions

4.1 Pay attention to the instructions in the Operation Manual

Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN balances.

4.2 Personnel training The appliance may only be operated and maintained by trained personnel.

5 Transport and storage

5.1 Testing upon acceptance When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage.

5.2 Packaging / return transport

Keep all parts of the original packaging for a possibly

required return. Only use original packaging for returning. Prior to dispatch disconnect all cables and remove

loose/mobile parts. Reattach possibly supplied transport securing devices. Secure all parts such as the glass wind screen, the

weighing pan, power unit etc. against shifting and damage.

http://www.kern-sohn.com/


6 Unpacking, Setup and Commissioning

6.1 Installation Site, Location of Use The balances are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your balance. Therefore, observe the following for the installation site:

• Place the balance on a firm, level surface; • Avoid extreme heat as well as temperature fluctuation caused by installing

next to a radiator or in the direct sunlight; • Protect the balance against direct draughts due to open windows and doors; • Avoid jarring during weighing; • Protect the balance against high humidity, vapours and dust; • Do not expose the device to extreme dampness for longer periods of time.

Non-permitted condensation (condensation of air humidity on the appliance) may occur if a cold appliance is taken to a considerably warmer environment. In this case, acclimatize the disconnected appliance for ca. 2 hours at room temperature.

• Avoid static charge of goods to be weighed or weighing container.

If electro-magnetic fields or static charge occur, or if the power supply is unstable major deviations on the display (incorrect weighing results) are possible. In that case, the location must be changed.

6.2 Unpacking and placing Open package, take out the appliance and accessories. Verify that there has been no damage and that all packing items are present. The balance must be installed in a way that the weighing pan is exactly in horizontal position. Mount the display unit in a way that facilitates operation and where it is easy to see.


6.2.1 Scope of delivery / serial accessories • Platform and display unit, see chap. 2 • Mains adapter • 4 x adjustable feet • Wall fixture (with fixing screws) • Operating manual

6.3 Mains connection

Select a country-specific power plug and insert it in the power unit.

Check, whether the voltage acceptance on the scales is set correctly. Do not connect the scales to the power grid unless the information on the scales (sticker) matches the local mains voltage. Only use KERN original mains adapter. Using other makes requires consent by KERN.

Important: Before starting your weighing balance, check the mains cable for

damage. Ensure that the power unit does not come into contact with liquids. Ensure access to power plug at all times.

6.4 Battery operation On the rear side of the display unit remove the battery cover and connect 4 x 1.5V mignon cells. Reinsert the battery cover. In order to save the battery, the balance switches automatically off after 3 minutes without weighing. Additional switch-off times can be set in the menu (function "A.OFF").

If the batteries are depleted, the battery symbol is displayed. Switch-off balance and replace batteries at once. If the balance is not used for a longer time, take out the batteries and store them separately. Leaking battery liquid could damage the balance.

6.5 Initial Commissioning In order to obtain exact results with the electronic balances, your balance must have reached the operating temperature (see warming up time chap. During this warming up time the balance must be connected to the power supply (mains, accumulator or battery). The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment.


7 Adjustment As the acceleration value due to gravity is not the same at every location on earth, each balance must be coordinated - in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location (only if the balance has not already been adjusted to the location in the factory). This adjustment process must be carried out for the first commissioning, after each change of location as well as in case of fluctuating environment temperature. To receive accurate measuring values it is also recommended to adjust the balance periodically in weighing operation. Observe stable environmental conditions. A warming up time (see chapter 1) is required for stabilization.

Press and at the same time in weighing mode. [ECF 1] is displayed.

(The adjustment process can be exited at any time with . The balance returns then to weighing mode.)

Confirm display of [ECF 1] with . [CAL Z] is displayed.

Acknowledge with . [--------] followed by [LOAdi] will be displayed briefly. Then the display to input the recommended adjustment weight is displayed (see chap. 1 "Technical data") The left digit flashes. Enter the value of the adjustment weight as follows:

Switch to the next digit to the right with .

Increase number with .

Confirm the value entered with .

(example)


The specified adjustment weight is displayed flashing.

(example)

Place the adjustment weight centrically on the weighing

pan and confirm with . "CAL Y" will flash briefly and a signalling tone will sound. Adjustment will be performed. Then the balance returns automatically into the weighing mode.

An error message will be displayed in the event of an adjustment error or incorrect adjustment weight. Remove the adjustment weight and repeat the adjustment process. Keep the adjustment weight close to the balance. Daily control of the weighing exactness is recommended for quality-relevant applications.


8 Operation

8.1 Start-up

Start balance by pressing . The balance will carry out a self-test As soon as the weight display appears, the balance is ready for weighing.

Should the balance not display exactly zero despite empty weighing pan, press the

button. The balance will be set to zero after a short standby time.

8.2 Switching Off

Switch off balance with , the display will go off.


8.3 Taring

Place an empty weighing container, the weight of the weighing container will be displayed.

Press , the zero display appears. The indicator [NET] is displayed. The tare weight is saved until it is deleted.

Weigh the material, the net weight will be indicated. The taring process can be repeated any number of times, e.g. when adding several components for a mixture (adding). The limit is reached when the whole weighing range is exhausted. After removing the weighing container, the weight of the weighing container appears as negative display.

The tare weight is saved until it is deleted.

Delete tare value:

Unload the balance and press , zero display will appear.


8.4 Hold function (animal weighing function) The balance has an integrated animal weighing function (mean value calculation). Using this function it is possible to weigh domestic or small animals exactly (min. load 1% of the max. one), although they do not stand quiet on the weighing pan.

Place weighing goods and press . The display will be blinking [-HOLD] and the indicator [hold] will be displayed. During this time the balance takes up several measured values and displays then the calculated mean value.

This value will be displayed until you press again. The indicator [hold] turns off, the balance will return to the normal weighing mode.

By pressing again, this function can be repeated any number of times.

(example)

There is no average value calculation in the event of too much movement (heavy display oscillation).


8.5 Determination of the number of pieces Before it is possible to determine the number of pieces by means of the scales, it is necessary to specify the average piece weight (unit weight), the so-called reference value. In order to do it, one shall place the specific number of pieces being counted up. By means of the scales, the total mass shall be determined which then will be divided by the number of pieces (the so-called reference pieces). Afterwards, based on the calculated average piece weight, counting up shall be carried out.

The greater the number of reference pieces, the higher the accuracy of counting up.

In the weighing module, by means of button, set „Pcs” unit. The scales is now in the module allowing to determine the number of pieces.

Keep pushing button until the display shows „C00000”. The value after the comma blinks. The number of reference pieces may be entered in the way described below:

• : Increasing the numerical value

• : Moving on to the next value after comma

• : Confirmation of the entered number of reference pieces

Enter the number of reference pieces in the way described above. Here, for example 100 pieces. Digit "1" blinks.

(example)

Place the pieces to be counted up on the scales and

confirm by means of pushing button. The number of pieces shall be displayed.


9 Menu

9.1 Navigation in the menu

Press and at the same time in weighing mode. [UF 1] is displayed.

Press as often as necessary until the required function is displayed.

Confirm selected function by . The current setting will be displayed. Select

the desired parameter with . Return to menu by .

Press to exit the menu. The balance returns automatically into weighing mode.

9.2 Menu overview

(example)

Internal value not documented

* Auto-Off Automatic shutdown function Can be set between 1-99 minutes

Display background illumination

Adjustable:

Background lighting on

Background lighting off

* Backlight automatically off


Hold function (animal weighing function)

Adjustable:

Average value is calculated for unstable weighing conditions from approx. 20 d

Average value is calculated for unstable weighing conditions from approx. 5 d

* Average value is calculated for unstable weighing conditions from approx. 10 d

Auto Zero Adjustable: ZP 0 * Auto Zero: Off ZP 1 • 0.5 d/s ZP 2 • 1 d/s ZP 3 • 2 d/s ZP 4 • 3 d/s ZP 5 • 5 d/s

* G-value (value of the local gravitational acceleration) Adjustable

Factory settings are marked by *.


10 Servicing, maintenance, disposal

10.1 Cleaning Before cleaning, disconnect the appliance from the operating voltage. Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Take care that the device is not penetrated by fluids and polish it with a dry soft cloth. Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner. Spilled weighing goods must be removed immediately.

10.2 Servicing, maintenance The appliance may only be opened by trained service technicians who are authorized by KERN. Before opening, disconnect from power supply.

10.3 Disposal Disposal of packaging and appliance must be carried out by operator according to valid national or regional law of the location where the appliance is used.

11 Error messages, troubleshooting guide

Error message Function

hhhhhh Overload

LLLLLL Minimum weight under min. value


In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning. Help: Fault Possible cause The displayed weight does not glow. • The balance is not switched on.

• The mains supply connection has been interrupted (mains cable not plugged in/faulty).

• Power supply interrupted. The displayed weight is permanently changing

• Draught/air movement

• Table/floor vibrations

• The weighing pan is in contact with foreign matter.

• Electromagnetic fields / static charging (choose different location/switch off interfering device if possible)

The weighing value is obviously wrong

• The display of the balance is not at zero

• Adjustment is no longer correct.

• The balance is on an uneven surface.

• Great fluctuations in temperature. • Electromagnetic fields / static charging

(choose different location/switch off interfering device if possible)

Should other error messages occur, switch balance off and then on again. If the error message remains inform manufacturer.


12 Declaration of conformity The current EC/EU Conformity declaration can be found online in:

www.kern-sohn.com/ce

http://www.kern-sohn.com/ce

operating manual platform/floor scales · 3.2 improper use do not use balance for dynamic addon...

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